Q: What are the prime factors of the number 513,123,328?

 A: 2, 79, 6343

Why are those the prime factors of the number 513,123,328?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 513,123,328

513,123,328
Factor Arrows
2256,561,664
Factor Arrows
2128,280,832
Factor Arrows
264,140,416
Factor Arrows
232,070,208
Factor Arrows
216,035,104
Factor Arrows
28,017,552
Factor Arrows
24,008,776
Factor Arrows
22,004,388
Factor Arrows
21,002,194
Factor Arrows
2501,097
Factor Arrows
796,343

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 79, 6343

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 79 x 6,343 = 513,123,328

This can also be written as 210 x 791 x 6,3431 = 513,123,328

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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